Antarctic Wide Subglacial Hydrology Modeling
Abstract Global sea levels are rising due, in large part, to the increase in the rate of melting of ice sheets as a direct result of climate change. A large fraction of uncertainty in future sea level rise comes from limited understanding of basal conditions under ice sheets. Specifically, subglacia...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Geophysical Research Letters |
| Online Access: | https://doi.org/10.1029/2024GL111386 |
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| _version_ | 1832593502480891904 |
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| author | Shivani Ehrenfeucht Christine Dow Koi McArthur Mathieu Morlighem Felicity S. McCormack |
| author_facet | Shivani Ehrenfeucht Christine Dow Koi McArthur Mathieu Morlighem Felicity S. McCormack |
| author_sort | Shivani Ehrenfeucht |
| collection | DOAJ |
| description | Abstract Global sea levels are rising due, in large part, to the increase in the rate of melting of ice sheets as a direct result of climate change. A large fraction of uncertainty in future sea level rise comes from limited understanding of basal conditions under ice sheets. Specifically, subglacial hydrology, which describes the volume and movement of meltwater underneath glaciers and resulting basal water pressures. This system exerts a strong control on ice basal sliding and the rate of ice shelf melt, both of which can destabilize glaciers and lead to enhanced sea level rise. Here, we present subglacial hydrology model results of the full Antarctic Ice Sheet derived using the Glacier Drainage System model. We examine water pressures of the distributed drainage system, the distribution of the channelized system, and freshwater discharge across grounding lines of major drainage basins in the steady state subglacial system under present day conditions. |
| format | Article |
| id | doaj-art-d34df748b58b4309b6b431241aae827f |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-d34df748b58b4309b6b431241aae827f2025-01-20T13:05:57ZengWileyGeophysical Research Letters0094-82761944-80072025-01-01521n/an/a10.1029/2024GL111386Antarctic Wide Subglacial Hydrology ModelingShivani Ehrenfeucht0Christine Dow1Koi McArthur2Mathieu Morlighem3Felicity S. McCormack4Department of Geography & Environmental Management University of Waterloo Waterloo ON CanadaDepartment of Geography & Environmental Management University of Waterloo Waterloo ON CanadaDepartment of Geography & Environmental Management University of Waterloo Waterloo ON CanadaDepartment of Earth Sciences Dartmouth College Hanover NH USASecuring Antarctica's Environmental Future School of Earth Atmosphere & Environment Monash University Clayton VIC AustraliaAbstract Global sea levels are rising due, in large part, to the increase in the rate of melting of ice sheets as a direct result of climate change. A large fraction of uncertainty in future sea level rise comes from limited understanding of basal conditions under ice sheets. Specifically, subglacial hydrology, which describes the volume and movement of meltwater underneath glaciers and resulting basal water pressures. This system exerts a strong control on ice basal sliding and the rate of ice shelf melt, both of which can destabilize glaciers and lead to enhanced sea level rise. Here, we present subglacial hydrology model results of the full Antarctic Ice Sheet derived using the Glacier Drainage System model. We examine water pressures of the distributed drainage system, the distribution of the channelized system, and freshwater discharge across grounding lines of major drainage basins in the steady state subglacial system under present day conditions.https://doi.org/10.1029/2024GL111386 |
| spellingShingle | Shivani Ehrenfeucht Christine Dow Koi McArthur Mathieu Morlighem Felicity S. McCormack Antarctic Wide Subglacial Hydrology Modeling Geophysical Research Letters |
| title | Antarctic Wide Subglacial Hydrology Modeling |
| title_full | Antarctic Wide Subglacial Hydrology Modeling |
| title_fullStr | Antarctic Wide Subglacial Hydrology Modeling |
| title_full_unstemmed | Antarctic Wide Subglacial Hydrology Modeling |
| title_short | Antarctic Wide Subglacial Hydrology Modeling |
| title_sort | antarctic wide subglacial hydrology modeling |
| url | https://doi.org/10.1029/2024GL111386 |
| work_keys_str_mv | AT shivaniehrenfeucht antarcticwidesubglacialhydrologymodeling AT christinedow antarcticwidesubglacialhydrologymodeling AT koimcarthur antarcticwidesubglacialhydrologymodeling AT mathieumorlighem antarcticwidesubglacialhydrologymodeling AT felicitysmccormack antarcticwidesubglacialhydrologymodeling |